Fenofibrate reduces lipoprotein associated phospholipase A2 mass and oxidative lipids in hypertriglyceridemic subjects with the metabolic syndrome
Abstract
Background Lipoprotein-associated phospholipase A2 (Lp-PLA2) is a macrophage-synthesized lipase that is primarily bound to small electronegative low-density lipoproteins (LDLs). Lipoprotein-associated phospholipase A2 oxidatively modifies LDL and generates the proinflammatory byproducts oxidized fatty acids (ox-FAs) and lysophosphatidylcholine. Fenofibrate reduces Lp-PLA2 mass; however, it remains unknown whether the anti-inflammatory effects of fenofibrate are related to changes in LDL subclasses. Methods This was a randomized, double-blind, controlled clinical trial designed to investigate the effects of 3-month treatment with fenofibrate (160 mg/d) on Lp-PLA2 mass, LDL subclasses, and ox-FAs among 55 hypertriglyceridemic (> or = 1.7 and < 6.78 mmol/L) subjects with the metabolic syndrome. Results Fenofibrate treatment lowered fasting Lp-PLA2 mass by 13.2% (-19.0 to -7.7) versus placebo (2.3% [-5.0 to 4.1], P = .0002) and total ox-FA by 15.5% (-34.2 to +1.4) versus an 11.5% increase with placebo (P = .0013). In age-, sex-, and treatment-adjusted models, changes in Lp-PLA2 mass were associated with reductions in chemical LDL cholesterol (r = 0.59, P < .01) and measured total LDL particles (LDL-Ps) (r = 0.64, P < .01) and small LDL-Ps (r = 0.57, P < .01). In models that included small LDL, effects of fenofibrate on Lp-PLA2 mass were attenuated (P = .125), but not in models that included LDL cholesterol (P < .0001) and LDL-Ps (P = .005). Changes in Lp-PLA2 mass were not significantly associated with changes in ox-FA or inflammatory markers. Conclusions Among hypertriglyceridemic subjects with the metabolic syndrome, fenofibrate therapy reduced Lp-PLA2 mass, and these changes were associated with fewer small LDL-Ps.
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Fenofibrate treatment typically reduces serum triglycerides by a mean change of −93.7 mg/dL (−39.3%), increases high density lipoprotein cholesterol by +5.5 mg/dL (+12.4%), and reduces low density lipoprotein cholesterol by −17.9 mg/dL (−12.3%).
“Typical changes in serum lipids as a result of FF treatment include clinically important mean reductions of serum triglycerides (TG) by a mean change of −93.7 mg/dL (−39.3%), increases of high density lipoprotein cholesterol (HDLC) by +5.5 mg/dL (+12.4%), and reductions in low density lipoprotein cholesterol (LDLC) by −17.9 mg/dL (−12.3%).”
From Fenofibrate and metabolic syndrome (2010) · cites this paper as [36]
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- Authors
- Rosenson, R. S.
- Affiliations
- University of Michigan (US)
- Corresponding author
- Rosenson, Robert S.
- ORCID
- Rosenson, Robert S.
- Venue
- American Heart Journal
- Publisher
- Elsevier BV
- Published
- 2008-03
- Volume
- 155
- Issue
- 3
- Pages
- 499.e9-499.e16
- ISSN
- 0002-8703 (ISSN-L)
- OpenAlex
- W2065099374
- Cited by
- 30
- References
- 39
- Citations by year
- 2025: 1 · 2022: 2 · 2016: 1 · 2015: 1 · 2014: 1 · 2013: 3 · 2012: 5
- FWCI
- 5.63
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- American Heart Journal (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Health Sciences › Medicine › Surgery › Lipoproteins and Cardiovascular Health
- Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Lipid metabolism and disorders
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Clinical Biochemistry › Paraoxonase enzyme and polymorphisms
- Keywords
- fenofibrate, lipoprotein-associated phospholipase A2, oxidized fatty acids, metabolic syndrome, hypertriglyceridemia, small dense LDL, LDL subclasses, LDL cholesterol, anti-inflammatory activity, lysophosphatidylcholine, LDL oxidation, statins, fibrates, triglycerides, inflammation, atherosclerosis risk
- MeSH terms
- Adult, Hypolipidemic Agents, Dose-Response Relationship, Drug, Double-Blind Method, Fatty Acids, Nonesterified, Female, Follow-Up Studies, Humans, Immunoenzyme Techniques, Lysophosphatidylcholines, Male, Middle Aged, Magnetic Resonance Spectroscopy, Fenofibrate, Hypertriglyceridemia, Treatment Outcome, Intercellular Adhesion Molecule-1, Vascular Cell Adhesion Molecule-1, Metabolic Syndrome, 1-Alkyl-2-acetylglycerophosphocholine Esterase
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